CN109464915A - A kind of hollow-fibre membrane production post-processing approach and system - Google Patents
A kind of hollow-fibre membrane production post-processing approach and system Download PDFInfo
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- CN109464915A CN109464915A CN201710799954.7A CN201710799954A CN109464915A CN 109464915 A CN109464915 A CN 109464915A CN 201710799954 A CN201710799954 A CN 201710799954A CN 109464915 A CN109464915 A CN 109464915A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
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Abstract
The present invention relates to a kind of hollow-fibre membranes to produce post-processing approach, comprising: the hollow fiber film thread containing diluent is sent into extraction equipment by S1., is extracted with extractant to the film wire, is obtained film wire extracted and the extract liquor containing extractant and diluent；The extract liquor is sent into buffer storage；S2. in the buffer storage, the portion of diluent in the extract liquor is precipitated, and is then separated by solid-liquid separation, obtains solid diluent and extraction raffinate, extraction raffinate is sent into enrichment facility；S3. in the enrichment facility, the extractant in the extraction raffinate is separated, the liquid extractant and concentrate recycled.The invention further relates to a kind of hollow-fibre membranes to produce after-treatment system.The method and system provided according to the present invention, significantly improves operational safety, reduces production cost and environmental risk, has a significant impact, has a good application prospect to the raising of the production technology of hollow-fibre membrane.
Description
Technical field
The invention belongs to field of material processing, it is related to a kind of doughnut film preparation post-processing approach and system.
Background technique
Hollow-fibre membrane is as one of most common seperation film in Industrial Waste Water Treatments, and municipal wastewater is handled, sea water desalination,
The scale of the industrial applications such as food and medicine is gradually expanding.Film product market is also rising year by year.At home and abroad have numerous
Company carries out the production of various hollow fiber separating film materials.Hollow-fibre membrane main preparation methods have melt spinning-pull stretching at present
(MSCS) method, immersion precipitation (NIPS) and Thermal inactive (TIPS) method.Pulling method generally uses extruder by resin melt
High speed traction after extrusion, using cold stretch, hot-stretch and thermal finalization, raw material is single, and production process does not need solvent, still
Porosity is low, and pore-size distribution is wide, it is difficult to meet large-scale industry sewage treatment demand.NIPS method is adopted in current industrial membrane module
Most methods dissolves polymer using a large amount of water-miscible organic solvents in production process, and sharp in forming process
The organic solvent in membrane removal is cleaned with water, thus produces sewage largely containing organic solvent, and the flux of film is high, still
Film wire intensity is poor, therefore has numerous producers by the way of woven tube or long fiber reinforcement, and such equipment generally requires together
Shi Jiagong reinforcing material, is limited to the on-line machining speed of reinforcing material, and generallys use reaction kettle and carry out mixed dissolution polymerization
Object, various solvents and additive, this same mode can generate waste water largely containing water-miscible organic solvent.And prepared by TIPS method
It is often difficult to during hollow-fibre membrane using water-soluble solvent, thus needs to clean using a large amount of organic solvent extracts
Diluent used in membrane removal forming process is removed, and then produces solvent slop.
It is influenced by environmental protection pressure increasing at present, production bring waste water/solvent slop is treated as membrane material
Industrialized production in urgent need to resolve major issue.Internal membrane enterprise generallys use sink soaking and washing or extraction, will be clear
Film wire is taken out drying afterwards several times by washing lotion displacement, and used cleaning solution becomes waste liquid, especially for the life of TIPS method
Production process produces reluctant solvent slop, since solvent slop concentration height cannot be discharged into common biochemical treatment of industrial wastewater system
System, such as using diluted method, it will cause water wastes, improve production cost.On the other hand leakproofness is extracted using sink
It is poor, more VOC emission can be generated when especially needing to heat extraction in operation, while influencing the safety of operation
Bring environmental issue.
Summary of the invention
In view of the deficiencies in the prior art, the application provides a kind of production post-processing approach of hollow-fibre membrane and is
System, hollow-fibre membrane aftertreatment technology VOC emission is difficult to control in the prior art, Solvent quantity is big and waste liquid is difficult for solution
The problems such as.
According to an aspect of the invention, there is provided a kind of hollow-fibre membrane produces post-processing approach, comprising:
S1. the hollow fiber film thread containing diluent is sent into extraction equipment, the film wire is extracted with extractant,
Obtain film wire extracted and the extract liquor containing extractant and diluent；The extract liquor is sent into buffer storage；
S2. in the buffer storage, the portion of diluent in the extract liquor is precipitated, and is then separated by solid-liquid separation, is obtained
To solid diluent and extraction raffinate, extraction raffinate is sent into enrichment facility；
S3. in the enrichment facility, the extractant in the extraction raffinate is separated, the liquid extractant recycled
And concentrate.
The method provided according to the present invention can recycle extractant and diluent, reduce VOC emission and discharging of waste liquid, keep away
Exempt from the harm to environment, and improve process safety, reduces process costs.
A preferred embodiment of the method according to the present invention, in the step S1, the temperature when extraction
Rate of extraction can be improved to 100 DEG C for room temperature, and avoid the precipitation of diluent extracted.
A preferred embodiment of the method according to the present invention in the step S1 follows the mould silk
Ring extraction, such as uses circulating pump, so that the liquid in extraction equipment is formed circulation, extracts to film wire.
A preferred embodiment of the method according to the present invention reaches setting item through monitoring in the step S1
Part (when the diluent in such as extract liquor reaches setting concentration), send the extract liquor into buffer storage.The specific setting item
Part is determined according to technological parameter.At this point, being passed through fresh extractant, continue extracting operation.Through monitoring film wire substantially without dilution
After agent, the film wire is taken out.
A preferred embodiment of the method according to the present invention, in the step S2, the extract liquor can be
It extracts in liquid storage tank, is then fed into settling tank.In settling tank, temperature declines, and the portion of diluent in the extract liquor is precipitated.
Preliminary separation of solid and liquid is carried out in the settling tank.It in step s 2, can be in separation and recovery portion of diluent.In S2 also
It may include filter operation, the logistics flowed out from settling tank after filtering, then is passed through enrichment facility.
A preferred embodiment of the method in the step S3 adds the extraction raffinate according to the present invention
Heat, extractant therein become gas-liquid separation after steam, obtain gas and concentrate, and gas through cooling, obtains liquid extraction again
Agent.The temperature of the heating can be 40-100 DEG C.The gas-liquid separation preferably under vacuum (such as vacuum degree be -0.095~
0MPa) carry out.
A preferred embodiment of the method, the liquid extractant of the recycling are passed through the extraction according to the present invention
Device extracts the film wire, to realize the recycling of the extractant of recycling.
The method provided according to the present invention, obtained concentrate are diluent.Obtained concentrate and solid is dilute
Releasing agent may return to hollow-fibre membrane production, to realize recycling.
The method provided according to the present invention can return the extractant evaporative condenser in remaining extract liquor in step s3
It receives, concentrate is remaining diluent and is recycled.
Method according to the present invention, it is using (vacuum decompression) dynamic thermal reflux that extraction, separation, (filtering) is dense
The production technologies such as contracting, condensation are continuously finished, and are realized and are extracted to the heat cycles of film, and extract liquor recycles time with diluent
It receives, saves raw material and working time, it is easy to operate, it can be with continuous operation；Have not in extractant in particular for using
With the diluent system of solubility, diluent and extractant can be efficiently separated and be recycled；VOC emission is realized simultaneously
Source effectively controls and produces the minimizing of waste liquid, significantly improves operational safety, reduces production cost and environmental risk.It is right
The raising of the production technology of hollow-fibre membrane has a significant impact, and has a good application prospect.
According to another aspect of the present invention, additionally provide a kind of hollow-fibre membrane production after-treatment system, comprising with
Lower device:
Extraction equipment, including extractor and monitoring component, the extractor are equipped with heating element, are equipped with and place in extractor
The porous wire storage slot of film wire；The film wire being placed in the wire storage slot contacts in the extractor with extractant, and extractant carries out
The film wire is extracted, and film wire extracted and the extract liquor containing diluent and extractant are obtained；
Buffer storage contains settling tank, and the extract liquor is precipitated in settling tank, and the diluent of part is in solid form
It is precipitated, is separated by solid-liquid separation, obtains solid diluent and extraction raffinate；
Enrichment facility contains concentration tank and condenser, the extraction raffinate is passed through concentration tank, the heating part being arranged on concentration tank
Under the action of part, extractant evaporates to form steam, and remaining concentrate, extractant steam through the cooling of condenser, is recycled again
Extractant.
One specific embodiment of the device provided according to the present invention, the enrichment facility further include recycling extraction
Liquid storage tank, the extractant of the recycling flow into the recycling and extract liquid storage tank.The recycling is advantageously extracted into liquid storage tank and institute
The extractor stated in extraction equipment is connected, so that the extractant of recycling be made to be passed through extraction equipment again, extracts to the film wire.
One specific embodiment of the device provided according to the present invention, using the monitoring component to film wire and extract liquor
It is monitored.When diluent through monitoring in extract liquor reaches setting concentration, the extract liquor is sent into buffer storage, is passed through
Fresh extractant continues extracting operation.Through monitoring, when film wire is after basic diluent free, the film wire is taken out.The extraction
Device is taken further to contain circulating pump, the extraction equipment can carry out thermal cycle extraction to hollow-fibre membrane under air-proof condition
It takes.Circulating pump in the extraction equipment can recycle the extractant of heating in the extractor；And according to setting item
Extract liquor is delivered to buffer storage by part.The extractor is that Horizontal band is jacket structured.Heat medium can be passed through in collet,
Such as water, steam, conduction oil, heating temperature are room temperature~100 DEG C.The extraction equipment further contains liquidometer and cooling
Device.Cooler is located above extractor, and the extractant steam that volatilization is heated under sealing condition is condensed back, container internal pressure is avoided
Power is excessively high；The liquidometer of setting is mounted on extraction tank, and to control Solvent quantity, extractant liquid level be should be higher than that in tank
The film wire extreme higher position put.
One specific embodiment of the device provided according to the present invention, the buffer storage further comprise extract liquor storage
Tank is first placed from the extract liquor flowed out in the extractor in the extraction liquid storage tank, subsequently into settling tank.It is described
Extraction liquid storage tank is provided with heating device, and temperature control is in stomach between 100 DEG C.One side extract liquor cycling extraction film wire reaches
Extraction liquid storage tank caching is discharged into newly to extract by delivery pump (no more than saturated concentration at this temperature) after to a certain concentration
Agent enters back into extractor and is extracted, and on the other hand guarantees to prevent portion of diluent in cache-time because extracting at room temperature
Solubility is lower and blocking pipeline is precipitated in agent.Extract liquor is delivered to settling tank from extraction liquid storage tank as needed, reduces temperature
Portion of diluent can carry out preliminary solid-liquid in settling tank and divide because solubility is lower and is precipitated in extractant at room temperature afterwards
From liquid enters enrichment facility after separation, and obtained solid is the portion of diluent recycled.The buffer storage includes filtering
Device after being filtered from the logistics flowed out in settling tank, then is passed through concentration tank.The filter is set to going out for settling tank
Mouthful.It is provided with delivery pump in the buffer storage, to convey to fluid.
One specific embodiment of the device provided according to the present invention, the enrichment facility device include recycling extract liquor
Storage tank, the extractant of the recycling flow into recycling extraction liquid storage tank.The condenser is secondary condenser or multi-stage condensing device.
In a specific example, the recycling extraction liquid storage tank is connected with the extractor in the extraction equipment, recycles extractant
It can be recycled directly as new extractant.The enrichment facility can further comprise vacuum plant, delivery pump and gas-liquid point
From device.The vacuum plant includes vacuum pump and gas filtering tank, and vacuum degree is controllable between -0.095~0MPa.The gas-liquid
Separator is mounted between condenser and concentration tank gas outlet.The concentration tank is jacket heat-preservation structure, and temperature is 40~100
DEG C, being transported to the extraction raffinate in concentration tank from settling tank and being heated by vacuum plant reduces vacuum degree in concentration tank, meeting
There is partially liq to extract out from the concentration tank with steam, into gas-liquid separator；In the gas-liquid separator, gas-liquid point
From, liquid reflux to concentration tank, and extractant gas is changed into liquid after then cooling down by condenser, the extraction recycled
Agent, remaining in concentration tank is concentrate.Concentrate is the diluent of recycling, can be recycled.
One specific embodiment of the device provided according to the present invention, the system are run in sealed states；It can be with
The non-tight form of existing equipment is avoided to be unfavorable for heating extraction, VOC emission source controls and operates safety, and extractant consumption is big
The problems such as, reduce production cost.
The method and system provided according to the present invention will be extracted using dynamic thermal reflux, separation, filtering, will be concentrated, cold
The production technologies such as solidifying are integrated, equipment leakproofness and highly-safe, and extract liquor recycles, and save raw material and working time,
Facilitate continuous operation, while in particular for the diluent system for there are different solubilities in extractant is used, can effectively divide
From diluent and extractant and it is recycled；The consumption of raw materials of hollow-fibre membrane production is further decreased, while in solution
Empty fiber membrane produces after-treatment device environment protection emission problem.
The method and system provided according to the present invention saves raw material and working time, easy to operate, can continuously transport
Row；The leakproofness of film production equipment for after-treatment is significantly improved, convenient for improving extraction efficiency, while realizing VOC using heating extraction
Emission source effectively controls and produces the minimizing of waste liquid, significantly improves operational safety, reduces production cost and ambient wind
Danger；The raising of the production technology of hollow-fibre membrane is had a significant impact, is had a good application prospect.
Detailed description of the invention
Fig. 1 is schematic device according to an embodiment of the invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific examples.
Hollow-fibre membrane according to the present invention produces after-treatment system, including following device:
Extraction equipment, including extractor, the extractor are equipped with heating element, are equipped in extractor and place the porous of film wire
Wire storage slot；The film wire being placed in the wire storage slot contacts in the extractor with extractant, extractant carry out the film wire into
Row extraction, obtains film wire extracted and the extract liquor containing diluent and extractant；
Buffer storage contains settling tank, and the extract liquor is precipitated in settling tank, and the diluent of part is in solid form
It is precipitated, is separated by solid-liquid separation, obtains solid diluent and extraction raffinate；
Enrichment facility contains concentration tank and condenser, the extraction raffinate is passed through concentration tank, the heating part being arranged on concentration tank
Under the action of part, extractant evaporates to form steam, and remaining concentrate, extractant steam through the cooling of condenser, is recycled again
Extractant.
Fig. 1 shows schematic device according to an embodiment of the invention.Extraction equipment includes extractor 1, is equipped with
Inlet and outlet.Extractor 1 is that Horizontal band is jacket structured, and heat medium, such as water, steam, conduction oil can be passed through in collet,
Equipped with heating device (not shown), heating temperature is room temperature~100 DEG C, has wire storage slot (not shown) in extractor 1.Extraction equipment
In contain circulating pump 9, be located at the lower section of extractor 1, the extractant of heating can be recycled in extractor 1.On the extractor 1
It is provided with monitoring component (not shown), after monitoring that the extract liquor in the extractor 1 reaches setting concentration, opens triple valve
Extract liquor is delivered to buffer storage by door 13.The extraction equipment further contains: cooler 10, is located at 1 top of extractor, will seal
The extractant steam that volatilization is heated under the conditions of closing is condensed back, and avoids container inner pressure excessively high；Liquidometer (not shown), is mounted on
On 1 tank body of extractor, to control Solvent quantity, extractant liquid level should be higher than that the film wire extreme higher position put in tank；Extraction
There is movable end cover in tank at least one end, has parallel sliding track in tank.In a specific embodiment, when the monitoring component monitors
After being substantially free of diluent to the film wire, extraction can be pushed into or be pulled out by sliding rail by wire storage slot by opening movable end cover
Tank.
Buffer storage includes settling tank 3.Extract liquor is delivered to settling tank 3, reduces after temperature the part of dilution (if do not heated)
Agent can be tentatively separated by solid-liquid separation, after separation because solubility is lower and be precipitated in extractant at room temperature in settling tank 3
Extraction raffinate enter enrichment facility, obtained solid be recycle portion of diluent.The buffer storage further comprises extraction
Liquid storage tank 2 and delivery pump (not shown).Extract liquor from the extraction equipment be introduced into extraction liquid storage tank 2, extract liquor according to
It needs to enter settling tank 3 from extraction liquid storage tank.Wherein extraction liquid storage tank 2 is equipped with heating device, opens hand hole and visor, heating temperature fastly
Degree is room temperature~100 DEG C, and one side extract liquor cycling extraction film wire, which reaches, to be discharged into extract liquor by delivery pump after a certain concentration and store up
Tank caching is extracted so that fresh extractant enters back into extractor, on the other hand guarantees to prevent part of dilution in cache-time
Agent is because solubility is lower and blocking pipeline is precipitated in extractant at room temperature.The settling tank 3 is jacket heat-preservation structure, with fast
Open hand hole and visor.
Enrichment facility includes concentration tank 4 and condenser 6 and recycling extraction liquid storage tank 7.Concentration tank is transported to from settling tank 3
The extraction raffinate in 4 is heated to set temperature by heating device, and extract liquor steam is changed into liquid after passing through the cooling of condenser 6,
Recycling extraction liquid storage tank 7 is flowed back into, remaining is concentrate, that is, the diluent recycled.The concentration tank 4 is jacket heat-preservation knot
Structure is equipped with heating device and scraper mixing device, and heating temperature is 40~100 DEG C, while heating, and scraper mixing device is simultaneously
Stir extract liquor.The condenser 6 can be secondary condenser or multi-stage condensing device.The recycling extraction liquid storage tank 7 matches coil pipe
Cooler opens hand hole and visor fastly.It can further comprise vacuum plant, delivery pump 12 and gas-liquid separator in the enrichment facility
5.The gas-liquid separator 5 is mounted between 4 gas outlet of condenser 6 and concentration tank tank.The vacuum plant includes 8 He of vacuum pump
Gas filtration tank 11, vacuum degree are controllable between -0.095~0MPa.Vacuum degree in concentration tank is dropped to by vacuum plant 8 and is set
Definite value, extractant steam are extracted out from concentration tank 4 and are gone, but have partially liq as steam is extracted out from the concentration tank, into
After entering gas-liquid separator 5, gas-liquid separation, to concentration tank 2, gas enters condenser 6 and forms liquid after condensing liquid reflux, stream
Enter recycling extraction liquid storage tank 7；It can according to need later and convey the extractant of recycling by delivery pump 12, then through triple valve
Door 13 passes in extractor 1.
Hollow-fibre membrane according to the present invention produces post-processing approach, comprising:
S1. the hollow fiber film thread containing diluent is sent into extraction equipment, the film wire is extracted with extractant,
Obtain film wire extracted and the extract liquor containing extractant and diluent；The extract liquor is sent into buffer storage；
S2. in the buffer storage, the portion of diluent in the extract liquor is precipitated, and is then separated by solid-liquid separation, is obtained
To solid diluent and extraction raffinate, extraction raffinate is sent into enrichment facility；
S3. in the enrichment facility, the extractant in the extraction raffinate is separated, the liquid extractant recycled
And concentrate.
In the step S1, the temperature when extraction is room temperature to 100 DEG C (such as 60 DEG C), and extraction speed can be improved
Degree, and avoid the precipitation of diluent extracted.Cycling extraction is carried out to the mould silk, circulating pump is such as used, fills extraction
Liquid in setting forms circulation, extracts to film wire.When diluent through monitoring in extract liquor reaches setting concentration, by institute
It states extract liquor and is sent into buffer storage.At this point, being passed through fresh extractant, continue extracting operation.It is monitored in basic diluent free
Afterwards, it is taken out from extractor.
In the step S2, the extract liquor can store in extraction liquid storage tank, be then fed into settling tank.Wherein extract
The temperature for taking liquid storage tank is room temperature~100 DEG C, and one side extract liquor cycling extraction film wire passes through delivery pump after reaching a certain concentration
It is discharged into extraction liquid storage tank caching to be extracted so that new extractant enters back into extractor, on the other hand guarantees to prevent in cache-time
Only portion of diluent is because solubility is lower and blocking pipeline is precipitated in extractant at room temperature.In settling tank, no heating dress
It sets, temperature decline, the portion of diluent in the extract liquor is precipitated.Preliminary separation of solid and liquid is carried out in the settling tank；It is heavy
The logistics flowed out in the tank of shallow lake enters enrichment facility after filter operation, and solid phase is then the portion of diluent being precipitated.In step S2
In, portion of diluent can be separated and recovered.
In the step S3, the extraction raffinate is heated, extractant therein becomes gas-liquid separation after steam, obtains
Gas and concentrate, gas through cooling, obtain liquid extractant again.The temperature of the heating can be 40-100 DEG C (such as 60
℃).The gas-liquid separation carries out preferably under vacuum (such as vacuum degree is -0.095~0MPa).
The liquid extractant of the recycling can be used as new extractant and be passed through the extraction equipment, extract to the film wire
It takes.To realize the recycling of the extractant of recycling.
Obtained concentrate is diluent.Obtained concentrate and solid diluent may return to hollow-fibre membrane
Production, to realize recycling.
Method and system in the present invention, runs in sealed states；Can to avoid existing equipment non-tight form not
Conducive to heating extraction, the problems such as VOC emission source controls and operates safety, and extractant consumption is big, production cost is reduced.
The method and system provided according to the present invention, will extract using dynamic thermal reflux, and separate, be concentrated, condense etc.
Production technology is integrated, equipment leakproofness and highly-safe, and extract liquor recycles, and saves raw material and working time, convenient
Continuous operation, while in particular for the diluent system for having different solubilities in extractant is used, it can efficiently separate dilute
It releases agent and extractant and is recycled；The consumption of raw materials of hollow-fibre membrane production is further decreased, while solving hollow fibre
It ties up film and produces after-treatment device environment protection emission problem
It should be noted that embodiment described above for explaining only the invention, is not constituted to of the invention any
Limitation.By referring to exemplary embodiments, invention has been described, it should be appreciated that word used in it is descriptive
With explanatory vocabulary, rather than limited vocabulary.The present invention can be made within the scope of the claims by regulation
Modification, and the present invention is revised in without departing substantially from scope and spirit of the present invention.Although the present invention described in it relates to
And specific method, material and embodiment, it is not intended that the present invention is limited to particular case disclosed in it, on the contrary, this hair
It is bright to can be extended to other all methods and applications with the same function.
Claims (11)
1. a kind of hollow-fibre membrane produces post-processing approach, comprising:
S1. the hollow fiber film thread containing diluent is sent into extraction equipment, the film wire is extracted with extractant, is obtained
Film wire extracted and extract liquor containing extractant and diluent；The extract liquor is sent into buffer storage；
S2. in the buffer storage, the portion of diluent in the extract liquor is precipitated, and is then separated by solid-liquid separation, consolidate
Extraction raffinate is sent into enrichment facility by phase dilution agent and extraction raffinate；
S3. in the enrichment facility, the extractant in the extraction raffinate is separated, the liquid extractant that is recycled and dense
Contracting liquid.
2. the method according to claim 1, wherein in the step S1, the temperature when extraction is normal
Temperature is to 100 DEG C；And/or cycling extraction is carried out to the mould silk.
3. method according to claim 1 or 2, which is characterized in that in the step S3, add to the extraction raffinate
Heat, obtains extractant steam and concentrate, and the steam through cooling, obtains liquid extractant again.
4. method described in any one of -3 according to claim 1, which is characterized in that in the step S3, the heating
Temperature be 40-100 DEG C；And/or the separation carries out under vacuum, preferably vacuum degree is -0.095 to 0MPa.
5. method described in any one of -4 according to claim 1, which is characterized in that lead to the liquid extractant of the recycling
Enter the extraction equipment；And/or when reaching setting condition, the extract liquor is sent into buffer storage.
Include following device 6. a kind of hollow-fibre membrane produces after-treatment system:
Extraction equipment, including extractor and monitoring component, the extractor are equipped with heating element, are equipped in extractor and place film wire
Porous wire storage slot；The film wire being placed in the wire storage slot contacts in the extractor with extractant, carries out to the film wire
Extraction, obtains film wire extracted and the extract liquor containing diluent and extractant；
Buffer storage contains settling tank, and the extract liquor is precipitated in settling tank, and portion of diluent is precipitated in solid form,
It is separated by solid-liquid separation, obtains solid diluent and extraction raffinate；
Enrichment facility contains concentration tank and condenser, the extraction raffinate is passed through concentration tank, the heating element being arranged on concentration tank
Under effect, extractant evaporates to form steam, remaining concentrate, and extractant steam is again through the cooling of condenser, the extraction that is recycled
Take agent.
7. system according to claim 6, which is characterized in that the enrichment facility includes recycling extraction liquid storage tank, described
The extractant of recycling flows into the recycling and extracts liquid storage tank；It is preferred that the extraction in the recycling extraction liquid storage tank and the extraction equipment
Tank is taken to be connected.
8. system according to claim 6 or 7, which is characterized in that the extraction equipment contains circulating pump, further comprises
Liquidometer and cooler；The extractor is that Horizontal band is jacket structured.
9. the system according to any one of claim 6-8, which is characterized in that the buffer storage includes extract liquor storage
Tank is first placed from the extract liquor flowed out in the extractor in the extraction liquid storage tank, subsequently into settling tank.
10. the system according to any one of claim 6-9, which is characterized in that the enrichment facility includes vacuum holding
It sets, delivery pump and gas-liquid separator.
11. the system according to any one of claim 6-10, which is characterized in that the system is transported in sealed states
Row.
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| CN101164677A (en) * | 2006-10-18 | 2008-04-23 | 中国科学院化学研究所 | Method for preparing super high molecular polythene porous membrane by thermally phase separation method |
| CN103521092A (en) * | 2013-10-18 | 2014-01-22 | 国家海洋局天津海水淡化与综合利用研究所 | Environment-friendly method for preparing fluorine-containing polymer microporous film |
| CN103981635A (en) * | 2014-05-09 | 2014-08-13 | 浙江省纺织测试研究院 | Preparation method of porous fiber non-woven fabric |
| CN106422810A (en) * | 2016-10-17 | 2017-02-22 | 四川久润环保科技有限公司 | After-treatment device and method for preparing hollow fiber membrane through thermally induced phase separation |
| CN106693718A (en) * | 2017-01-22 | 2017-05-24 | 大连大学 | Method for preparing polymer microporous membrane by supercritical carbon dioxide extraction assisted thermally induced phase separation method |
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